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    <body>
        <h1>Basic Bar Chart Test</h1>
        <p class="breadcrumbs"><a href="../index.html">Epoch Chart Tests</a> &raquo; Basic Bar</p>

        <ol>
            <li><a href="#test-1">Single Series</a></li>
            <li><a href="#test-2">Single Series II</a></li>
            <li><a href="#test-3">Multi Series</a></li>
            <li><a href="#test-4">Multi Series II</a></li>
            <li><a href="#test-5">Single Series Transition</a></li>
            <li><a href="#test-6">Multi Series Transition</a></li>
            <li><a href="#test-7">Single Series to Multi Series Transition</a></li>
            <li><a href="#test-8">Layer Color Override</a></li>
            <li><a href="#test-9">Categorical Color Switching</a></li>
            <li><a href="#test-10">Multi Series without Labels</a></li>
            <li><a href="#test-11">Horizontally Oriented Single Series</a></li>
            <li><a href="#test-12">Horizontally Oriented Multi Series</a></li>
            <li><a href="#test-13">Horizontally Oriented Multi Series Transition</a></li>
            <li><a href="#test-14">Vertical to Horizontal Transition</a></li>
            <li><a href="#test-15">Padding Changes</a></li>
            <li><a href="#test-16">Hide/Show Layers</a></li>
            <li><a href="#test-17">Data Formatting</a></li>
            <li><a href="#test-18">Many bars</a></li>
        </ol>


        <!-- Test 1 -->
        <div id="test-1" class="test">
            <h2>1. Single Series</h2>
            <p>Display a plot of <code>y = cos(x) + 1</code> over the range <code>[0, 2&pi;)</code>.</p>
            <div class="epoch"></div>
        </div>

        <script>
        $(function() {
            var data = [{ label: 'A', values: [] }],
                length = 32;

            for (var i = 0; i < length; i++) {
                var x = i * 2 * Math.PI / length,
                    y = Math.cos(x) + 1;
                data[0].values.push({x: x, y: y});
            }

            $('#test-1 .epoch').epoch({
                type: 'bar',
                data: data,
                tickFormats: {
                    bottom: function(d) {
                        return parseFloat(d).toFixed(1);
                    }
                }
            });
        });
        </script>


        <!-- Test 2 -->
        <div id="test-2" class="test">
            <h2>2. Single Series II</h2>
            <p>Display a plot of <code>y = sin(x) + 1</code> over the range <code>[0, 2&pi;)</code>.</p>
            <div class="epoch"></div>
        </div>

        <script>
        $(function() {
            var data = [{ label: 'A', values: [] }],
                length = 32;

            for (var i = 0; i < length; i++) {
                var x = i * 2 * Math.PI / length,
                    y = Math.sin(x) + 1;
                data[0].values.push({x: x, y: y});
            }

            $('#test-2 .epoch').epoch({
                type: 'bar',
                data: data,
                tickFormats: {
                    bottom: function(d) {
                        return parseFloat(d).toFixed(1);
                    }
                }
            });
        });
        </script>


        <!-- Test 3 -->
        <div id="test-3" class="test">
            <h2>3. Multi-series Plot</h2>
            <p>
                Display a plot of the following functions stacked atop one another:
                <ul>
                    <li><code>y = x</code></li>
                    <li><code>y = 2x</code></li>
                    <li><code>y = 3x</code></li>
                </ul>
                over the range <code>[0, 10)</code>.
            </p>
            <div class="epoch"></div>
        </div>

        <script>
        $(function(){
            var data = [
                    {label: 'A', values: []},
                    {label: 'B', values: []},
                    {label: 'C', values: []}
                ],
                length = 10;

            for (var i = 0; i < length; i++) {
                var x = i * 10 / length;
                data[0].values.push({x: x, y: x});
                data[1].values.push({x: x, y: 2*x});
                data[2].values.push({x: x, y: 3*x});
            }

            $('#test-3 .epoch').epoch({
                type: 'bar',
                data: data
            });
        });
        </script>


        <!-- Test 4 -->
        <div id="test-4" class="test">
            <h2>4. Multi-series Plot II</h2>
            <p>
                Display a plot of the following functions stacked atop one another:
                <ul>
                    <li><code>y = |x|</code></li>
                    <li><code>y = x<sup>2</sup></code></li>
                    <li><code>y = |x<sup>3</sup>|</code></li>
                </ul>
                over the range [-1, 1).
            </p>
            <div class="epoch"></div>
        </div>

        <script>
        $(function() {
            var data = [
                    {label: 'A', values: []},
                    {label: 'B', values: []},
                    {label: 'C', values: []}
                ],
                length = 20;

            for (var i = 0; i < length; i++) {
                var x = (i - length / 2)  / (length / 2);
                data[0].values.push({x: x, y: Math.abs(x)});
                data[1].values.push({x: x, y: Math.pow(x, 2)});
                data[2].values.push({x: x, y: Math.abs(Math.pow(x, 3))});
            }

            $('#test-4 .epoch').epoch({ type: 'bar', data: data });
        });
        </script>


        <!-- Test 5 -->
        <div id="test-5" class="test">
            <h2>5. Single Series Transition</h2>
            <p>
                Correctly transition between the plots <code>y = |x|</code> over the range [-10, 10) and <code>y = x<sup>2</sup></code> over the range [-20, 20). The transition is initiated by pressing the buttons below the plot.
            </p>
            <div class="epoch"></div>
            <p>
                <button data-index="0">y = x</button>
                <button data-index="1">y = x^2</button>
            </p>
        </div>

        <script>
        $(function() {
            var data1 = [{label: 'A', values: []}],
                data2 = [{label: 'B', values: []}],
                data = [data1, data2],
                length = 40;

            for (var i = 0; i < length; i++) {
                var x1 = (i - length / 2) * 10 / (length / 2),
                    y1 = Math.abs(x1),
                    x2 = (i - length / 2) * 20 / (length / 2),
                    y2 = Math.pow(x2, 2);
                data1[0].values.push({x: x1, y: y1});
                data2[0].values.push({x: x2, y: y2});
            }

            var chart = $('#test-5 .epoch').epoch({
                type: 'bar',
                data: data1
            });

            $('#test-5 button').on('click', function(e) {
                var index = parseInt($(e.target).attr('data-index'));
                chart.update(data[index]);
            });
        });
        </script>

        <!-- Test 6 -->
        <div id="test-6" class="test">
            <h2>6. Multi Series Transition</h2>
            <p>
                Correctly render and transition between Set A:
                <ul>
                    <li><code>y = x</code></li>
                    <li><code>y = 2*x</code></li>
                    <li><code>y = 3*x</code></li>
                </ul>
                over the range [1, 100). and Set B:
                <ul>
                    <li><code>y = ln(x)</code></li>
                    <li><code>y = 2*ln(x)</code></li>
                    <li><code>y = 3*ln(x)</code></li>
                </ul>
                over the range [1, 100). The transition is initiated by pressing the buttons below the plot.
            <div class="epoch"></div>
            <p>
                <button data-index="0">Set A</button>
                <button data-index="1">Set B</button>
            </p>
        </div>

        <script>
        $(function() {
            var data1 = [
                {label: 'A', values: []},
                {label: 'B', values: []},
                {label: 'C', values: []}
            ];

            var data2 = [
                {label: 'A', values: []},
                {label: 'B', values: []},
                {label: 'C', values: []}
            ];

            var data = [data1, data2],
                length = 10;

            for (var i = 0; i < length; i++) {
                var x = (i * 100 / length) + 1;

                data1[0].values.push({x: x, y: x});
                data1[1].values.push({x: x, y: 2*x});
                data1[2].values.push({x: x, y: 3*x});

                data2[0].values.push({x: x, y: Math.log(x)});
                data2[1].values.push({x: x, y: 2*Math.log(x)});
                data2[2].values.push({x: x, y: 3*Math.log(x)});
            }

            var chart = $('#test-6 .epoch').epoch({ type: 'bar', data: data1 });

            $('#test-6 button').on('click', function(e) {
                var index = parseInt($(e.target).attr('data-index'));
                chart.update(data[index]);
            });
        });
        </script>


        <!-- Test 7 -->
        <div id="test-7" class="test">
            <h2>7. Single Series to Multi Series Transition</h2>
            <p>
                Correctly transition between a single series, plotting the functions:
                <ul>
                    <li><code>y = x<sup>2</sup> - 0.5*x</code></li>
                </ul>
                To a multi series set, plotting the functions:
                <ul>
                    <li><code>y = ln(x)</code></li>
                    <li><code>y = x</code></li>
                    <li><code>y = x * ln(x)</code></li>
                </ul>
                over the range [1, 4) for all plots. The transition is initiated by pressing the buttons below the plot.
            </p>
            <div class="epoch"></div>
            <p>
                <button data-index="0">Single</button>
                <button data-index="1">Multi</button>
            </p>
        </div>

        <script>
        $(function() {
            var data1 = [{label: 'A', values: []}],
                data2 = [
                    {label: 'A', values: []},
                    {label: 'B', values: []},
                    {label: 'C', values: []}
                ],
                data = [data1, data2],
                length = 32;

            for (var i = 0; i < length; i++) {
                var x = (3*i/length) + 1;
                data1[0].values.push({x: x, y: x*x - 0.5*x});
                data2[0].values.push({x: x, y: Math.log(x)});
                data2[1].values.push({x: x, y: x});
                data2[2].values.push({x: x, y: x * Math.log(x)});
            }

            var chart = $('#test-7 .epoch').epoch({
                type: 'bar',
                data: data1,
                tickFormats: {
                    bottom: function(d) { return d.toFixed(1); }
                }
            });

            $('#test-7 button').on('click', function(e) {
                var index = parseInt($(e.target).attr('data-index'));
                chart.update(data[index]);
            });
        });
        </script>

        <!-- Test 8 -->
        <div id="test-8" class="test">
            <h2>8. Layer Color Override</h2>
            <p>
                Display the first layer of the plot as pink, the second layer as green, and the third layer as blue.
            </p>
            <div class="epoch"></div>
        </div>

        <style>
        #test-8 .epoch .bar.a { fill: pink; }
        #test-8 .epoch .bar.b { fill: green; }
        #test-8 .epoch .bar.c { fill: blue;  }
        </style>

        <script>
        $(function() {
            var data = [
                    {label: 'A', values: []},
                    {label: 'B', values: []},
                    {label: 'C', values: []}
                ],
                length = 10;

            for (var i = 0; i < length; i++) {
                var x = i * 10 / length + 1,
                    y = x * Math.log(x);
                for (var j = 0; j < data.length; j++) {
                    data[j].values.push({x: x, y: y});
                }
            }

            $('#test-8 .epoch').epoch({ type: 'bar', data: data });
        });
        </script>

        <!-- Test 9 -->
        <div id="test-9" class="test">
            <h2>9. Categorical Color Switching</h3>
            <p>
                Change layer colors automatically when switching between the following categorical color classes on the containing element:
                <ul>
                    <li><code>category10</code></li>
                    <li><code>category20</code></li>
                    <li><code>category20b</code></li>
                    <li><code>category20c</code></li>
                </ul>
                Change the categorical colors by pressing the buttons below the chart.
            </p>

            <div class="epoch category10"></div>

            <p>
                <button data-class="category10">category10</button>
                <button data-class="category20">category20</button>
                <button data-class="category20b">category20b</button>
                <button data-class="category20c">category20c</button>
            </p>
        </div>
        <script>
        $(function() {
            var data = [
                    {label: 'A', values: []},
                    {label: 'B', values: []},
                    {label: 'C', values: []},
                    {label: 'D', values: []},
                    {label: 'E', values: []},
                    {label: 'F', values: []},
                    {label: 'G', values: []}
                ],
                length = 4,
                className = 'category10';

            for (var i = 0; i < length; i++) {
                var x = i * 1 / length;
                for (var j = 0; j < data.length; j++) {
                    data[j].values.push({x: x, y: Math.pow(x, j+1)});
                }
            }

            $('#test-9 .epoch').epoch({
                type: 'bar',
                data: data,
                tickFormats: {
                    bottom: function(d) { return d.toFixed(1); }
                }
            });

            $('#test-9 button').on('click', function(e) {
                $('#test-9 .epoch').removeClass(className);
                className = $(e.target).attr('data-class');
                $('#test-9 .epoch').addClass(className);
            });
        });
        </script>

        <!-- Test 10 -->
        <div id="test-10" class="test">
            <h2>10. Multi Series without Labels</h2>
            <p>
                Correctly render a multi-series plot of:
                <ul>
                    <li><code>y = sin(x) + 1</code></li>
                    <li><code>y = cos(x) + 1</code></li>
                </ul>
                where the layers are given without labels.
            </p>
            <div class="epoch"></div>
        </div>
        <script>
        $(function() {
            var data = [{values: []}, {values: []}],
                length = 32;

            for (var i = 0; i <= length; i++) {
                var x = i * 4 * Math.PI / length;
                data[0].values.push({x: x, y: Math.sin(x) + 1});
                data[1].values.push({x: x, y: Math.cos(x) + 1});
            }

            $('#test-10 .epoch').epoch({
                type: 'bar',
                data: data,
                tickFormats: {
                    bottom: function(d) { return d.toFixed(1); }
                }
            });
        });
        </script>

        <!-- Test 11 -->
        <div id="test-11" class="test">
            <h2>11. Horizontally Oriented Single Series</h2>
            <p>
                Correctly render the single series plot of:
                <ul>
                    <li>A - 20</li>
                    <li>B - 30</li>
                    <li>C - 60</li>
                </ul>
                using a horizontal orientation.
            </p>
            <div class="epoch"></div>
        </div>
        <script>
        $(function() {
            var data = [{values: [
                {x: 'A', y: 20},
                {x: 'B', y: 30},
                {x: 'C', y: 60}
            ]}];

            $('#test-11 .epoch').epoch({
                type: 'bar',
                orientation: 'horizontal',
                data: data
            });
        });
        </script>

        <!-- Test 12 -->
        <div id="test-12" class="test">
            <h2>12. Horizontally Oriented Multi Series</h2>
            <p>
                Correctly render the multi series plot of:
                <ul>
                    <li>A - 10, 30</li>
                    <li>B - 20, 50</li>
                    <li>C - 60, 10</li>
                </ul>
                using a horizontal orientation.
            </p>
            <div class="epoch"></div>
        </div>
        <script>
        $(function() {
            var data = [
                    { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 60}] },
                    { values: [{x: 'A', y: 30}, {x: 'B', y: 50}, {x: 'C', y: 10}] }
                ];

            $('#test-12 .epoch').epoch({
                type: 'bar',
                orientation: 'horizontal',
                data: data
            });
        });
        </script>

        <!-- Test 13 -->
        <div id="test-13" class="test">
            <h2>13. Horizontally Oriented Multi Series Transition</h2>
            <p>
                Correctly render the Horizontally oriented multi series plot of:
                <ul>
                    <li>A - 10, 10</li>
                    <li>B - 20, 20</li>
                    <li>C - 30, 30</li>
                </ul>
                and transition to the single series plot:
                <ul>
                    <li>A - 5</li>
                    <li>B - 10</li>
                    <li>C - 40</li>
                </ul>
            </p>
            <div class="epoch"></div>
            <p>
                <button data-index="0">Multi</button>
                <button data-index="1">Single</button>
            </p>
        </div>
        <script>
        $(function() {
            var data1 = [
                    { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 30}] },
                    { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 30}] }
                ],
                data2 = [
                    { values: [{x: 'A', y: 5}, {x: 'B', y: 10}, {x: 'C', y: 40}] }
                ],
                data = [data1, data2];

            var chart = $('#test-13 .epoch').epoch({
                type: 'bar',
                orientation: 'horizontal',
                data: data1
            });

            $('#test-13 button').on('click', function(e) {
                var index = parseInt($(e.target).attr('data-index'));
                chart.update(data[index]);
            });
        });
        </script>

        <div id="test-14" class="test">
            <h2>14. Vertical to Horizontal Transition</h2>
            <div class="epoch"></div>
            <p>
                <button data-orientation="vertical">Vertical</button>
                <button data-orientation="horizontal">Horizontal</button>
            </p>
        </div>
        <script>
        $(function() {
            var data = [
                { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 30}] },
                { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 30}] }
            ];

            var chart = $('#test-14 .epoch').epoch({
                type: 'bar',
                data: data
            });

            $('#test-14 button').click(function(e) {
                var orientation = $(e.target).attr('data-orientation');
                chart.option('orientation', orientation);
            });
        });
        </script>

        <div id="test-15" class="test">
            <h2>15. Padding Changes</h2>
            <div class="epoch"></div>
            <p>
                <button data-index="0">Regular Padding</button>
                <button data-index="1">Fat Padding</button>
            </p>
        </div>
        <script>
        $(function() {
            var data = [
                { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 30}] },
                { values: [{x: 'A', y: 10}, {x: 'B', y: 20}, {x: 'C', y: 30}] }
            ];

            var padding = [
                {
                    padding: { bar: 0.08, group: 0.1 },
                    outerPadding: { bar: 0.08, group: 0.1 }
                },
                {
                    padding: { bar: 0.2, group: 0.3 },
                    outerPadding: { bar: 0.1, group: 0.2 }
                }
            ];

            var chart = $('#test-15 .epoch').epoch({ type: 'bar', data: data });
            $('#test-15 button').click(function(e) {
                var index = parseInt($(e.target).attr('data-index'));
                chart.option('padding', padding[index].padding);
                chart.option('outerPadding', padding[index].outerPadding);
            });
        });
        </script>

        <div id="test-16" class="test">
            <h2>16. Hide/Show Layers</h2>
            <div class="epoch"></div>
            <p>
                <button class="toggle" data-index="0">Toggle A</button>
                <button class="toggle" data-index="1">Toggle B</button>
                <button class="toggle" data-index="2">Toggle C</button>
                |
                <button class="orientation">Orientation</button>
            </p>
        </div>
        <script>
        $(function() {
            var chart = $('#test-16 .epoch').epoch({
                type: 'bar',
                data: data().add(function(x) { return x; })
                    .add(function(x) { return 1.5*x; })
                    .add(function(x) { return 2.0*x; }).get([0, 10], 1)
            });

            $('#test-16 button.toggle').click(function(e) {
                var index = parseInt($(e.target).attr('data-index'));
                chart.toggleLayer(index);
            });

            $('#test-16 button.orientation').click(function(e) {
                if (chart.option('orientation') == 'vertical')
                    chart.option('orientation', 'horizontal')
                else
                    chart.option('orientation', 'vertical')
            })
        });
        </script>

        <div id="test-17" class="test">
            <h2>17. Data Formatting</h2>
            <p>Ensure the chart works with the array, tuple, and key-value data formats.<p>
            <div class="epoch array"></div>
            <div class="epoch tuple"></div>
            <div class="epoch keyvalue"></div>
        </div>
        <script>
        $(function() {
            $('#test-17 .array').epoch({
                type: 'bar',
                data: [1, 2, 4, 8, 16, 32],
                dataFormat: 'array'
            });

            $('#test-17 .tuple').epoch({
                type: 'bar',
                dataFormat: 'tuple',
                data: [
                    [[0, 1], [1, 2], [2, 4], [3, 8]],
                    [[0, 1], [1, 3], [2, 9], [3, 27]]
                ]
            });

            $('#test-17 .keyvalue').epoch({
                type: 'bar',
                dataFormat: {
                    name: 'keyvalue',
                    arguments: [['a', 'b']],
                    options: {
                        x: function(d, i) { return d.x; }
                    }
                },
                data: [
                    {x: 1, a: 1, b: 1 },
                    {x: 2, a: 2, b: 4 },
                    {x: 3, a: 3, b: 6 },
                    {x: 4, a: 4, b: 8 },
                    {x: 5, a: 5, b: 10 }
                ]
            });
        });
        </script>

        <div id="test-18" class="test">
            <h2>18. Bar Ticks</h2>
            <p>Ensure that we can use ticks option with bar charts.<p>
            <div class="epoch"></div>
        </div>
        <script>
        $(function() {
            var data = [],
                size = 100;

            for (var i = 0; i < size; i++) {
                data.push({
                    x: i + 1,
                    a: 1 + Math.random()*2*i,
                    b: 1 + Math.random()*2*i
                });
            }

            var chart = $('#test-18 .epoch').epoch({
                type: 'bar',
                data: data,
                dataFormat: {
                    name: 'keyvalue',
                    arguments: [['a', 'b']],
                    options: {
                        x: function(d, i) { return d.x; }
                    }
                },
            });

            console.log(chart.data);
        });
        </script>
    </body>
</html>
